ksys/phys: Add ScRigidBodyGroup::Unk1 and one missed function

src/KingSystem/Physics/StaticCompound/physStaticCompoundRigidBodyGroup.cpp

@@ -1,4 +1,5 @@
 #include "KingSystem/Physics/StaticCompound/physStaticCompoundRigidBodyGroup.h"
+#include <Havok/Common/Base/hkBase.h>
 #include <Havok/Physics2012/Dynamics/Entity/hkpRigidBody.h>
 #include <Havok/Physics2012/Dynamics/World/hkpPhysicsSystem.h>
 #include <Havok/Physics2012/Internal/Collide/StaticCompound/hkpStaticCompoundShape.h>
@@ -340,4 +341,30 @@ const sead::Matrix34f& StaticCompoundRigidBodyGroup::getTransform() const {
     return mTransform;
 }
 
+StaticCompoundRigidBodyGroup::Unk1::~Unk1() {
+    if (_8) {
+        delete _8;
+        _8 = nullptr;
+    }
+
+    const auto decref = [](hkReferencedObject*& ptr) {
+        if (ptr) {
+            ptr->removeReference();
+            ptr = nullptr;
+        }
+    };
+
+    decref(_10);
+    decref(_18);
+    decref(_20);
+}
+
+RigidBody* StaticCompoundRigidBodyGroup::getRigidBody(BodyLayerType body_layer_type) const {
+    auto idx = static_cast<int>(body_layer_type);
+    if (idx < 0 || idx >= mRigidBodiesPerBodyLayerType.size())
+        return nullptr;
+
+    return mRigidBodiesPerBodyLayerType[idx];
+}
+
 }  // namespace ksys::phys

src/KingSystem/Physics/StaticCompound/physStaticCompoundRigidBodyGroup.h

@@ -9,6 +9,7 @@
 #include <thread/seadAtomic.h>
 #include "KingSystem/Utils/Types.h"
 
+class hkReferencedObject;
 class hkpPhysicsSystem;
 class hkpStaticCompoundShape;
 
@@ -69,6 +70,8 @@ public:
     sead::Vector3f getTransformedPos(const sead::Vector3f& pos) const;
     sead::Vector3f getRotatedDir(const sead::Vector3f& dir) const;
 
+    RigidBody* getRigidBody(BodyLayerType body_layer_type) const;
+
     void processUpdates();
 
     static Config& getConfig();
@@ -84,10 +87,21 @@ private:
         HasEnabledOrDisabledInstance = 1 << 5,
     };
 
+    // A type with a virtual destructor. Nothing else is known about it.
+    struct Unk2 {
+        virtual ~Unk2() = default;
+    };
+
+    // The remnants of a type that had a virtual destructor and a bunch of pointers.
+    // Nothing else is known about it.
     struct Unk1 {
         virtual ~Unk1();
 
-        u8 _8[0xc0];
+        Unk2* _8;
+        hkReferencedObject* _10;
+        hkReferencedObject* _18;
+        hkReferencedObject* _20;
+        u8 _28[0xc8 - 0x28];
     };
 
     const sead::Matrix34f& getTransform() const;